电动机第一次启动一般应在空载情况下进行,空载运行时间应为()h。A.1.5 B.2.

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问题:

电动机第一次启动一般应在空载情况下进行,空载运行时间应为()h。

A.1.5

B.2.0

C.2.5

D.3.0

考点:建设工程技术与计量(安装工程)第四节常用电气与通信材料第四节常用电气与通信材料题库
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Judy had very bad luck yesterday. In the morning, she came to school late, because her alarm clock didn’t go off. Usually she goes to school at 7:20 am. But yesterday, it was already 8:00 am when she got up. The teacher was angry(生气的) and asked her to stay in the classroom after school. At 5:00 pm, it was time for students to go home. But Judy couldn’t. She stayed until(直到) 5:30 pm. When she just went out of the classroom, it began to rain. She didn’t have an umbrella. On her way home, she fell off(摔下) her bicycle. When she got home, she was wet all through.

小题1:Judy was a(n)       .

A.teacher

B.student

C.doctor

D.actor小题2:What does the underlined “go off” mean?

A.出故障。

B.爆炸。

C.响。

D.停止。小题3:When did Judy’s classmates go home?

A.At 7:20 am.

B.At 8:30 am.

C.At 5:00 pm.

D.At 5:30 pm.小题4:How did Judy go home?

A.By bus.

B.By car.

C.By bike.

D.By train.小题5:Which is the best title?

A.Judy, a bad girl.

B.What a terrible day!

C.Judy’s school life.

D.A lucky day.

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病变组织作切片检查常使用的固定液为()

A.0.1%新洁尔灭

B.3%来苏儿

C.3%碘SI

D.10%福尔马林

E.3%氧氧化钠

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外部来源的危机风险是()

A.生产过程中的危机

B.社会因素引发的危机

C.竞争导致的危机

D.财务管理不当产生的危机

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直流高压是由交流高压经()后获得的。

A.整流

B.滤波

C.逆变

题型:单项选择题

对纳税信用为A级的纳税人按()核定其普通发票用量。

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